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Low water pressure during wash.

The dish washer fills with water but when running there is very little water pressure. The water does not get to the top spinner enough to turn it are wash the soap out of the dispenser. I removed the bottom spinner and the screen under it is cleen is there another filter? If not what else could cause this? Washer fills, cycles and runs fine but does not produce enough pressure during wash cycle to even turn the top wash paddles. I have had it completely apart checking for blockages and found none. The pump and impeller are in good condition as this unit is about 14 months old. Could this be the capacitor on the motor or is it bypassing pressure through a valve somewhere? Everything "looks" fine - what am I missing?

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  • craighertel Dec 04, 2008

    Model is a Whirlpool GU2455XTSS1

  • craighertel Dec 04, 2008

    I have had the entire dishwasher apart checking for blockages, even running water through parts to flush them. I have no blockages which is why I thought the pump may not be turning at top speed. I have left all spray arms and attachments off the outlet of the pump and wathed it pump. It only sprays water about 2 inches high from the outlet port which is not near enough volume too pump water to the top of the unit while supplying water to the bottom arm. What am I missing????

  • craighertel Dec 11, 2008

    Thank you. You confirmed my suspicions that is was the capacitor. I replaced it and all is working fine now. Thanks for your help.

  • craighertel Dec 11, 2008

    Thank you. You confirmed my suspicions that is was the capacitor. I replaced it and all is working fine now. Thanks for your help.

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D/w's have a fill valve that allows hot water into the tank, a safety float and switch that will cut the power to the fill valve if the water level inside the d/w gets to high. The motor and pump has impellors inside itself that pushes the water into the spray arms and also pushes the water out for the drain cycle. The spray arms turn to "swoosh" the water around inside the tank. Dishwashers need D/w's have a fill valve that allows hot water into the tank, a safety float and switch that will cut the power to the fill valve if the water level inside the d/w gets to high. The motor and pump has impellors inside itself that pushes the water into the spray arms and also pushes the water out for the drain cycle. The spray arms turn to "swoosh" the water around inside the tank. Dishwashers need hot water to dissolve the soap properly ( at min 120 degrees F but the closer to 140 degrees F the better ) You can and should check this inside the dishwasher. They also need dry ( granular ) new soap, liquids work good as well. Rinse aid ( like Jet-dry ) is important to help prevent spotting and also helps the dry cycle work better.
also read this
This is often the fill valve.  You can test the fill valve coil for continuity with a ohm meter, no needle movement = bad fill valve. You can also test the fill valve for 120 volts at the fill valve with a volt meter, power there and no fill = bad fill valve. No 120 volts there, you will have to trace power back to find the trouble maker. Test things like the float and float switch, wires and timer.  Fill valves are very bad for working once or twice and then quitting, if your dishwasher fills the first and second fill cycles and then no more water through the rest of the cycle, replace the fill valve. You will need to remove the access panels to get at the fill valve. Dishwasher fill valves also have a screen built into the valve entrance, this can also get all clogged up and need to be cleaned. 
also
Inside many dishwasher pump assemblies is a screw that goes through the upper impellor and screws directly into the motor shaft. Since the motor shaft and screw are made of metal...you guessed it...they can / will rust. The screw can rust and become very tight and difficult to remove!! These screws are normally a right ( regular ) hand thread, socket or nut driver can be used to remove the screw. One hard thing to do is to hold the impellor still so the screw can be removed, they often just turn together. The impellor may be jammed with a screwdriver to hold it still so the screw can be removed...sometimes the impellor can be help still by placing a rag on it and hold tight with your hand, the rag will help prevent a sharp edge on the impellor from cutting your fingers. The odd time that screw is too rusted into place, soaking a little rust buster or 3in1 oil on it over night may help loosen it. Sometimes trying to tighten the screw a little at first will help break it free. There are some tool ( see below ) that can be purchased to help hold the impellor still so the screw can be removed, these are only for a few models and pump assembly styles.
WLP seal tool helps center and install the pump seal
Frigidaire seal - impellor remover and install tool
Once the screw is removed, the next obstacle is the impellor can also get stuck onto the motor shaft. Many times I have to break off the old impellor. A sharp blow straight down with a hammer and flat screwdriver will often crack the plastic impellor...careful not to damage the pump body! If the motor shaft has indeed rusted, clean it up really good with sand cloth.

 

Posted on Dec 04, 2008

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HI  For best dishwashing results, set the temperature control of the water heater to no less than 140 degrees Farenheit. Water cooler than this usually doesn't get the dishes clean, unless your dishwasher is a newer model that preheats incoming water. The water shutoff for the dishwasher is typically located below the adjoining sink.

Posted on Dec 04, 2008

  • ABHISHEK.C
    ABHISHEK.C Dec 04, 2008

    hi
    here is the exact solution
    Accumulated detergent from prior washings can cause problems with the soap dispenser. Buildup can get into the soap dispenser and interfere with the spring that triggers the flip-out tray, or it can slow down the pivot action of the tray. If the dispenser is not opening, first make sure you aren't loading the machine so dishes or pots and pans are touching the dispenser, and that dish racks aren't blocking the dispenser. Also check to make sure the dispenser tray isn't cracked. If leftover detergent in the tray is almost liquid, rather than just damp, the tray may be damaged.

    If you can't solve the problem easily, replace the entire dispenser unit. This is usually easier than trying to disassemble it and replace separate parts. Use a new dispenser made for the dishwasher. The screws holding the dispenser in place may be on the front of the unit, or you may have to remove the front door panel to get to the screws and make the replacement. Remove the old dispenser and secure the new one, connecting it in the same way the old unit was attached.

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Check the float switch inside the tub, it should move freely up and down.

Check the harness to the motor

Check start capacitor on the left side of the wash motor

Posted on Dec 04, 2008

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  • 2,035 Answers

There's a spray arm at the bottom of your dishwasher--it may have a tall spray tube mounted to the center of it. There may also be a spray arm located directly beneath the upper rack of dishes and/or above the upper rack.

If debris is blocking the holes in the spray arms where the water comes out, it could cause cleaning problems. Regularly inspect each of the spray arms and clean out the holes as necessary.

Good luck...

Posted on Dec 04, 2008

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Siemens dishwasher isn't washing dishes clean and leaves some detergent in the door


Hello. From what you're describing, you might have low spray pressure(due to a clogged filter on the main pump, if your model has a filter). I really need the model number to help you accurately. Also, the water temperature may be too low to dissolve the detergent-- DISHWASHERS LIKE HOT WATER! The minimum temp for all the detergents is 120 degrees or hotter! I tell all my customers to turn on the hi-temp wash, or temp boost, or whatever the manufacturer calls it on every wash cycle! Otherwise, you're at the mercy of whatever temperature water got put in the tub. ALWAYS RUN THE HOT WATER IN THE SINK BEFORE TURNING ON THE WASHER. Modern units take very little water to fill. By the time the hot water makes it to the washer in most cases, it's already running on tepid or cold water--especially in the winter. I hope I helped you!

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Dishes not clean after running. Dishes and glasses have a white residue on them after drying. Water is turned on and seems to ok. When I open the washer after the wash cycle starts there are several...


Hi

If you are noticing that the dishes are not clean, then there are a few things to check for. Check the soap powder if it's kept in a dry environment. Also try replacing the powder with something like a gel or liquid. Next thing to check for is the water pressure and fill valve. Check if the water is filling in and the spray arms are throwing the water with enough pressure. Try and listen to the sound if you hear a proper spraying action sound.

If it seems as a low water pressure then check the fill valve. Now, check if dishwasher is draining the water or not. While the dishwasher is working check whether the dishwasher is draining and there is not much left out water after the cycle is complete. Try cleaning the spray arm with a soft brush. The water temperature plays a major role in cleaning of dishes. The temp should be between 125 and 150 F for dishwasher to clean the dishes. Hope this helps... Please post back if you need more informatiion.

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My dishes and glasses do not come out clean they appear to have some white residue on them...my water softner is working I am using liquid dish washer detergent and jet dry......just feel the washer is not...


If your dishes or glassware appear with a white residue or spotted following a complete wash cycle, adjusting the amount or type of detergent you?re using and adjusting your hot water heater?s water temperature may solve the problem. But before you do either of these, put a rinse additive (such as Jet-Dry) in the rinse dispenser to improve the sheeting action of the water.

Next, you?ll have to determine whether the film is removable or permanently etched. To do this, soak a glass in undiluted white vinegar for about 15 minutes. Or, wash the glass with warm water and concentrated dishwasher detergent or a high-phosphate detergent (such as Glass Magic).

If the film comes off, it is probably caused by hard water minerals, improper amounts of detergent, or unsuitable water temperature.

Permanent etching is often caused by a combination of soft water and excessive heat or detergent. If glassware is permanently etched, there isn?t anything you can do to make it clear again. But you can avoid future etching by taking these steps:

1) Be sure hot water entering the dishwasher is no hotter than 140 degrees F. Don?t use extra-hot settings such as ?Power Scrub,? and use the ?Energy Saver? dry cycle.

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Other possibilities: Your home?s water pressure may be too low, your water may be too hard, or the water temperature may not be hot enough.

In order for your dishwasher to fill to the appropriate level, water pressure should be from 20?120 pounds per square inch. If you suspect that your water pressure may be low, turn off all faucets or other users of water (such as washing machines and sprinklers) and then put a half-gallon jug under the kitchen faucet. Turn on the hot water full-blast. If the jug doesn?t fill within 14 seconds, your water pressure may be too low for proper dishwasher operation. Call your city water utility to discuss your options, or avoid drawing water elsewhere in the house or yard during dishwasher cycles.

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Hi

While putting dishes in the washer and obstructing the spray ams which causes food particles to stay on dishes. After loading dishwasher and pushing in baskets ,be sure the spray arm doesnt hit any of the dishes causing them to not clean properly. If that doesnt work or is definately not your problem try removing the spray arm and seeing if it has food inside of it. Some times they get food build up in them and need to be flushed out.

However the other causes for this problem are…

Not enough water entering dishwasher (check level after fill... Should be slightly below bottom wash arm)

Water filling but draining during wash cycle. Check toward end of wash cycle but before drain. See if water level is diminished from start of wash cycle.

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Sometimes you can dislodge and remove food particles stuck in one of the jets with a toothpick or other small probe. Others require that you remove the arm(s) and get a little more creative. I use compressed air to clear mine, but not everyone has access to compressed air, so use whatever you can to remove the food particles.

Simply dislodging them from the water ports is usually not effective... As soon as water pressure is applied, the particles return to the jets and stop them up again. The real fix in this instance is to completely remove the food particles from the arm if you can.


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To check the proper filling dishwasher will fill with water up to and around the heating element. If water is more below the heating element, you may have low water pressure or a problem with the fill valve. Try & listen if it sounds like it is spraying the water around with enough pressure.

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Not enough water entering dishwasher (check level after fill... Should be slightly below bottom wash arm)

Water filling but draining during wash cycle. Check toward end of wash cycle but before drain. See if water level is diminished from start of wash cycle.

New 'water saver' dishwashers are notorious for having smaller water jets, and thus easier to stop-up jets. Check the jets on all wash arms to be sure they are cleared of food particles.

Another way to check the wash arms is to manually position them at specific locations, momentarily run the dishwasher for a few seconds, then open the door to inspect the location of the wash arms. Do this three or four times to eliminate the possibility of coincidence.

If the wash arms do not move from the location that you put them, the most likely cause is food particles stopping up the water jets. These jets not only clean the dishes but also the water pressure they generate turn the arms inside the dishwasher to properly distribute water pressure on the dishes.

Sometimes you can dislodge and remove food particles stuck in one of the jets with a toothpick or other small probe. Others require that you remove the arm(s) and get a little more creative. I use compressed air to clear mine, but not everyone has access to compressed air, so use whatever you can to remove the food particles.

Simply dislodging them from the water ports is usually not effective... As soon as water pressure is applied, the particles return to the jets and stop them up again. The real fix in this instance is to completely remove the food particles from the arm if you can.

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Are dishes also not coming clean? Most likely, there is not enough water chruning in the tub to rinse soap out of cup during wash cycle. Sufficient wash action will wash the soap out of the cup and dissolve it in the water within a few seconds of the cup opening.

Most likely causes are:

Not enough water entering dishwasher (check level after fill... Should be slightly below bottom wash arm)

Water filling but draining during wash cycle. Check toward end of wash cycle but before drain. See if water level is diminished from start of wash cycle.

New 'water saver' dishwashers are notorious for having smaller water jets, and thus easier to stop-up jets. Check the jets on all wash arms to be sure they are cleared of food particles.

Another way to check the wash arms is to manually position them at specific locations, momentarily run the dishwasher for a few seconds, then open the door to inspect the location of the wash arms. Do this three or four times to eliminate the possibility of coincidence.

If the wash arms do not move from the location that you put them, the most likely cause is food particles stopping up the water jets. These jets not only clean the dishes but also the water pressure they generate turn the arms inside the dishwasher to properly distribute water pressure on the dishes.

Sometimes you can dislodge and remove food particles stuck in one of the jets with a toothpick or other small probe. Others require that you remove the arm(s) and get a little more creative. I use compressed air to clear mine, but not everyone has access to compressed air, so use whatever you can to remove the food particles.

Simply dislodging them from the water ports is usually not effective... As soon as water pressure is applied, the particles return to the jets and stop them up again. The real fix in this instance is to completely remove the food particles from the arm if you can.

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Most likely causes are:

Not enough water entering dishwasher (check level after fill... Should be slightly below bottom wash arm)

Water filling but draining during wash cycle. Check toward end of wash cycle but before drain. See if water level is diminished from start of wash cycle.

New 'water saver' dishwashers are notorious for having smaller water jets, and thus easier to stop-up jets. Check the jets on all wash arms to be sure they are cleared of food particles.

Another way to check the wash arms is to manually position them at specific locations, momentarily run the dishwasher for a few seconds, then open the door to inspect the location of the wash arms. Do this three or four times to eliminate the possibility of coincidence.

If the wash arms do not move from the location that you put them, the most likely cause is food particles stopping up the water jets. These jets not only clean the dishes but also the water pressure they generate turn the arms inside the dishwasher to properly distribute water pressure on the dishes.

Sometimes you can dislodge and remove food particles stuck in one of the jets with a toothpick or other small probe. Others require that you remove the arm(s) and get a little more creative. I use compressed air to clear mine, but not everyone has access to compressed air, so use whatever you can to remove the food particles.

Simply dislodging them from the water ports is usually not effective... As soon as water pressure is applied, the particles return to the jets and stop them up again. The real fix in this instance is to completely remove the food particles from the arm if you can.

Hope this help. Good luck.

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Sounds like the dishwasher is not getting enough water during it's fill cycle due to low water pressure on supply line or the dishwasher pump is not working correctly. Could be obstructed with food matter, etc.Hope this helps

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